Currency Fields

Pavel Donchev Mar 10, 2008

General

This script will format designated form fields as currency fields. Can be used several times on the page. Automatically does all the formatting. Easy to use!

Notes

Created by: Pavel Donchev
Web Site: http://chameleonbulgaria.com/
Posted: March 10, 2008

Source Code

Paste this source code into the designated areas.

External file

Paste this code into an external JavaScript file named: currencyFields.js

/* This script and many more are available free online at
The JavaScript Source!! http://www.javascriptsource.com
Created by: Pavel Donchev | http://chameleonbulgaria.com/ */

function currency(which){
		currencyValue = which.value;
		currencyValue = currencyValue.replace(",", "");
		decimalPos = currencyValue.lastIndexOf(".");
		if (decimalPos != -1){
				decimalPos = decimalPos + 1;
		}
		if (decimalPos != -1){
				decimal = currencyValue.substring(decimalPos, currencyValue.length);
				if (decimal.length > 2){
						decimal = decimal.substring(0, 2);
				}
				if (decimal.length < 2){
						while(decimal.length < 2){
							 decimal += "0";
						}
				}
		}
		if (decimalPos != -1){
				fullPart = currencyValue.substring(0, decimalPos - 1);
		} else {
				fullPart = currencyValue;
				decimal = "00";
		}
		newStr = "";
		for(i=0; i < fullPart.length; i++){
				newStr = fullPart.substring(fullPart.length-i-1, fullPart.length - i) + newStr;
				if (((i+1) % 3 == 0) & ((i+1) > 0)){
						if ((i+1) < fullPart.length){
							 newStr = "," + newStr;
						}
				}
		}
		which.value = newStr + "." + decimal;
}

function normalize(which){
		alert("Normal");
		val = which.value;
		val = val.replace(",", "");
		which.value = val;
}

Head

Paste this code into the HEAD section of your HTML document.


<script type="text/javascript" src="currencyFields.js"></script>

Body

Paste this code into the BODY section of your HTML document


$ <input type="text" name="currencyField1" onchange="currency(this);">

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